Like any other alternator, but for now I agree that there's no sense in removing it while it's working. Alternator failure with this car is like any other car- get a jump, then come home and fix it. IMO it's not worth fixing before it needs to be fixed. Besides, we have more issues with the VR, VR wiring, and inline fuses than the field brushes.
FYI: There is a 150a built in fuse on the wire between the battery and alternator near the battery connector. Problems with the VR regulator plug-in are common, the wires pull out of the connector, and are sometimes damaged in the wiring harness. All this should be inspected before performing any sort of alternator repair. There's no sense in wasting time.